Oily sludge treatment system and method
A treatment system and a technology for sludge sludge, which are applied in the fields of sludge treatment by temperature control, pyrolysis treatment of sludge, and petroleum industry, etc. Increase the production of non-condensable gas and other problems, to achieve the effect of improving oil quality and recovery rate, low oxygen content, and reducing non-condensable gas production
Pending Publication Date: 2019-05-07
大庆百世环保科技开发有限公司
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Problems solved by technology
However, these processes are likely to cause secondary cracking of light hydrocarbon components in the gas phase, which increases the production of non-condensable gas, and the recovery rate of high-quality oil is low, resulting in waste of resources. At the same time, there are problems such as high safety risks and high energy consumption.
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Embodiment 1
[0123] This embodiment adopts figure 2 The sludge treatment system shown. The raw material sludge treated in this embodiment comes from the third sludge of refining and chemical industry. After pretreatment to remove floating oil and mechanical impurities with a particle size larger than 30 mm, the obtained sludge has an oil content of 50 wt% and a water content of 90 wt%.
[0124] Vacuum distillation device, the absolute pressure is 50kPa, the temperature rise program is divided into dehydration section and fractionation section, the temperature in the dehydration section is about 80°C, the temperature rise program in the fractionation section is to keep warm at about 150°C for a sufficient time, and then raise the temperature to about 250°C ℃ and keep it for a sufficient time, then raise the temperature to about 350 ℃ and keep it for a sufficient time.
[0125] The decompression pyrolysis device has an absolute pressure of 5kPa and a temperature of 600°C.
[0126] Calcula...
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Abstract
The invention discloses an oily sludge treatment system and method. The system comprises a reduced pressure distillation device, a first air pumping device, a decompression pyrolysis device and a second air pumping device. A gas phase outlet of the reduced pressure distillation device is connected to the first air pumping device, a pyrolysis gas outlet of the decompression pyrolysis device is connected to the second air pumping device, and a feed inlet of the decompression pyrolysis device is connected to a heavy phase outlet of the decompression pyrolysis device. Specifically, the reduced pressure distillation device performs intermittent reduced pressure distillation treatment on the oily sludge to obtain light oil and a heavy phase component, and then the decompression pyrolysis deviceis employed for intermittent decompression thermal decomposition treatment on the heavy phase component, thus obtaining pyrolytic oil and residue. The oily sludge treatment system and method providedby the invention have high applicability to various oily sludge, also have high process stability and safety, and high oil recovery rate, save energy and reduce energy consumption.
Description
technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a sludge treatment system and method. Background technique [0002] Sludge contains oil, water, sediment and other impurities, and its composition is complex. Direct discharge of sludge will cause waste of effective oil, and will cause serious pollution and damage to the ecological environment. Therefore, effective treatment of sludge is required. At present, many sewage sludge treatment processes have been implemented at home and abroad. With continuous pyrolysis process and factory production mode, the sewage sludge is converted into easy-to-storage, easy-to-transport, high-energy-density and convenient-to-use oil, combustible gas, Solid products and other products. However, these processes are likely to cause secondary cracking of light hydrocarbon components in the gas phase, increasing the production of non-condensable gas, and the recovery rate of high-quality oi...
Claims
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Login to View More IPC IPC(8): C02F11/18C02F11/10C10G1/02C10G1/00
CPCY02W10/40
Inventor 李继凤路学喜
Owner 大庆百世环保科技开发有限公司